Method getTileUV

packages/tilemap/src/TilemapComponent.ts:1000–1020

* Get UV coordinates for a tile * 获取 tile 的 UV 坐标 * * 使用 UVHelper 计算 OpenGL 纹理坐标。 * Uses UVHelper to calculate OpenGL texture coordinates. * * @see UVHelper.calculateTileUV for coordinate system documentation * @param tilesetIndex Tileset index | Tileset 索引 *

(tilesetIndex: number, localTileId: number)

     * @returns [u0, v0, u1, v1] OpenGL UV coordinates, or null if invalid
     */
    getTileUV(tilesetIndex: number, localTileId: number): [number, number, number, number] | null {
        if (localTileId <= 0) return null;

        const tilesetData = this.getTilesetData(tilesetIndex);
        if (!tilesetData) {
            console.warn('[TilemapComponent] getTileUV: No tileset data for index', tilesetIndex);
            return null;
        }

        // Use UVHelper for coordinate calculation
        // 使用 UVHelper 计算坐标
        return UVHelper.calculateTileUV(localTileId - 1, {
            columns: tilesetData.columns,
            tileWidth: tilesetData.tileWidth,
            tileHeight: tilesetData.tileHeight,
            imageWidth: tilesetData.imageWidth,
            imageHeight: tilesetData.imageHeight,
            margin: tilesetData.margin,
            spacing: tilesetData.spacing
        });
    }

    // ===== Resize | 大小调整 =====